Portola Hills Weather Forecast

    • 46
    • 63

    Becoming Sunny

    • 52
    • 72

    Sunny

    • 53
    • 77

    Mostly Sunny

    • 54
    • 78

    Partly Sunny

    • 52
    • 75

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

Today 15 Oct Orange County Inland

Mostly sunny. Highs 65 to 69. Light Winds becoming west 10 Mph this afternoon.

Tonight 15 Oct Orange County Inland

Mostly clear. Lows 47 to 53. Areas of Winds west 10 Mph in the evening becoming light.

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Portola Hills Temperature Statistics

October Temperature

Corona Airport (13 miles)

  • Lowest 4 October, 2025

    48 °F

  • Average October

    66.1 °F

  • Highest 10 October, 2025

    91 °F

Climate (2020–Present)

Corona Airport (13 miles)

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  • Average Low 2020–2025

    52.1 °F

  • Average 2020–2025

    64.9 °F

  • Average High 2020–2025

    78 °F
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